Mechanical movement



A. FERRIER MECHANICAL MOVEMENT lApril 23, 1929.

Filed NOV. ll, 1927 Figi.

pag.31

gmantoc .L 9511x1511.

Patented Apr. 23, 1929.

UN1TED STATES ALEXANDER I. FERRIER, OF FLINT, MICHIGAN.

MECHANICAL MOVEMENT.

Application inea November 11, 1927. semi No. 232,686.

This invention relates to mechanica-l movements and has special reference to a mechanical movement for transforming continuous rotary motion to oscillatory motion such as is used `in windshield wipers, washingx machines and the like. l

Une important object o1 the inventis to provide an improved device ot' this character having a special 'form o1 near spacci' arranged to keep a rack and pinion. in constant correct relationship.

A second important object of the invention is to provide an improved 'form olf reciprocating element in such devices.

Vith the above and other objects in View as Will be hereinafter apparent, the invention consists in general oit' certain novel dev tails oitl construction and combinations of parts hereinafter fully described,.illustrated in the accompanying drawings and specii'ically claimed. n'

In the accompanying drawings like characters of reference indicate like parts in the several views, and:

Figure 1 is a horizontal sectionthroufrh the upper part of the casing enclosing the operating mechanism.

Figure 2 is a vertical section through the fasing` or housing,` and showing the operating parts in position. e

Figure 23 iis a front view of the reciprocating element with the casing omitted.k

In the construction of this invention there is provided a casing; having,r a back wall 1.0 and top and bottom walls 11, the easing thus formingl a channel. like structure and being indicated in general at 5. On the lront of this casing a cover plate 6 is secured by screws 7. At the rear of thecasing there is provided a hub or bearing 12 through which extends a shaft Q, which projects Within the casing' and earrieson its inner end a pinion el. Between the pinion 4land the Wall 10 is a spacing disk 3. lVithin the casiincy is a reciprocatingmember lwvhich is preferably made oi' a die stamping and this member is o1 channel shape with the flanges 14; straddling the disk 3 and resting;` ligl'itly against the rear Wall 10. At the 'front end Vthe the stamping' is pressed to form.` ribs 15 adapted to bear against the cover plate G, the

lfriction between the reciprocating.stamping and the casing being thus reduced to a minimum. Stamped out of this reciprocating member is a rack yl which meshes with the pinion l. At one end the member 13 provided with a tongue 1G havinga-n opening;-

17 'therein for the reception ot' a crank pin the path oft' which may be considered to be the circle 18 in Figi/ure 3. It will now be seen thatthe disk-l, through its engagement with the liann'ell, ykeeps 'the reciprocatingelement in. proper 'position lor the rack to mesh correctly with the pinion and that as Athe crank pin moves around vthe path 1.8 the member will have an oscillatory reeiprocati on which in turn ywill revolve the pinion 4 first in one direction and then in the other so that any element attached to the shalt will oscillate.` n

There has thus been provided a simple and eliicient device ol the kind described and for the purpose specilied.

It is obvious that minor changes may be madein the :t'orm and construction of the inventiony Without departing from the material spirit thereof] It is not, therefore, de-

sired to confine kthe invention to the exact form herein shown and described, but it is' desired to include all such as properly come Within the scope claimed.

Having thus described the is claimed as new, is:

1. In a `device olf the kind described, a channel like casing, a cover plate therefor, a shaft extendinginto said casing, a pinion on .said shaft, a second clic-.initd .like member mounted kin the casini,T for reciprocation therein, a spacing' disk mounted on the shaft between the lian i ol the secoinl chain nel like member and invention, What and a rack carried by the econd channel likey member and engaging said pinion.

2. Ina: device of the kind described, a`

channel like casing, a cover plate there i1', a .shalt extendinginto said'casingr, a pinion von said shaft, a second channel like member guiding ksaid member,

no'y 

